Hammer-controlling means.



PATENTED JAN. l, 1907.

W. W. WORD. HAMMER GONTROLLING MEANS.

APPLIUATION FILED 0014, 1000.

2 SHEETS-SHEET 2.

WITNESSES.'

' INVENTOR. mmm #M4 A; ATTORNEY.

sHmroN, n. c.

WILLIAM WV. WORD, OF SAN FRANCISCO, CALIFORNIA.

HAMMER-CONTROLLING MEANS.

i Specification of Letters Patent.

Patented Jan. 1, 1907.

Application filed October 4, 1906. Serial No 337,858.

T0 a/ZZ whom, it may concern:

' of controlling means or mechanism for fluidengines which are directlyconnected to hammers for forging purposes.

The particular application of my invention is to machines for shapingand sharpening'rock-drills in which plural motive engines actuated byair or steam are used, each engine being directly connected with anddriving a hammer, the hammers being usually arranged in planes at rightangles to each other. vThese machines are illustrated in several of myprevious patents-as, for eX- ample, in No. 731,728, June 23, 1903, andNo. 766,861, August 9, 1904, which said patents are mentioned merely forthe purpose 0f showing the particular use and object of my presentinvention.

The immediate object of my present invention is to enable the operatorto freely manipulate and attend to the forging work and processes thatnecessarily occupy his whole sight and both hands, leaving thehammer-action to be controlled by his foot alone, according to therequirements of the work.

My present invention mayV be briey stated to consist in a fluid-operatedmeans for separately and independently controlling the pluralfluid-engines which drive the hammers, said control Yconsisting instarting and stopping the engines, regulating the frequency andintensity of the blows of the hammers, and determining the position ofthe hammers when out of action.

Particularly my invention consists in the novel devices and theircombinations, which I shall hereinafter fully describe by reference tothe accompanying drawings, in which- Figure 1 is a side elevation of adouble forging-hammer of the type for which my controlling means isparticularly intended, showing the application of my invention. Fig. 2is a longitudinal section, enlarged, on line y y of Fig. 3 through thecontrolling i and valve chambers of the vertically-disposedhammer-operating engine, showing the parts in position to maintain saidengine at rest. Fig. 3 is a cross-section on the line of Fig. 2. Fig. 4is a perspective view of the control-valve. Fig. 5 is a top plan,enlarged, of the foot-controlled initial casing of the general fluidsystem. Fig. 6 is a longitudinal section of the same on the line e z ofFig. 5. Fig. 7 is a cross-section of the same on the line rw w of Fig.6. Fig. 8 is a side elevation of the rocking valve of the initial casingof Fig. 6. Fig. 9 is an end view of the same. Fig. 10 is a cross-sectionof the same on the line c 'v of Fig. 8. Fig. 11 is a perspective view ofsaid valve.

In Fig. 1 of the drawings, 1 is a foundation, 2 is a supporting-frame, 3is a pillar for a horizontally-disposed Huid-engine 4, and 5 is a postfor a vertically-disposed fluid-engine 6. The engine 4 has a hammer 7,and the engine 6 has a hammer 8,which operates on an anvil 9. of doublehammer for forging or making and sharpening rock-drills, such a doublehammer, for example, as is illustrated in my prior patents abovereferred to.

Describing rst the vertically-disposed engine 6 and its control andreferring for this purpose to Fig. 2, 10 is a valve-chamber in which isseated a slide-valve 11, which controls the ports 12 to the engine andthe eX- haust-port 13 in the ordinary manner. 14 is the control-chamberin which is seated the slidable valve 15, which controls a passage 16,connecting the two chambers 10 and 14, as seen in Fig. 3. This valve, asshown in Figs. 3 and 4, is sector-shaped in section and is carried, asshown in Fig. 2, on a stem 17, the inner end of which carries a piston18, and the outer end, passing through the chamber 14, has secured toits extremity a contactarm 19. This arm bears upon the outer eX- tremtyof a slidable holding-pin 20, which passes into the valve-chamber 10 andimpinges upon the near end of the valve 11 in said chamber. 21represents cushions in the chamber 10 to limit the movement 0f the valve11. In the control-valve 15, as shown in Figs. 4 and 3, is made a smallport 15, which provides a communication with the slide-valve chamberwhen the control-valve 15 is in position to close the passage 16 to saidchamber.

These parts represent a type IOO IIO

f Figs. 6 and 7, to which is fitted a T-coupling the rock-shaft 24between the bearing-walls The horizontally-disposed engine 4 is fittedonly with the slide-valve chamber 10, similar to the valve-chamber 10 ofthe vertically-disposed engine. 1n this chamber 10/ may be supported tobe seated a slide-valve similar to the slide-valve 11 and adapted to o lerate the engine in the same manner.

here need be no control-chamber similar to 14 in connection with thehorizontallydisposed engine, for its hammer does not need theinterposition of such control to define its position when at rest, andit may therefore be operated directly from the initial control.

Referring now to Fig. 5 in connection with Fig. 1, 22 is thevalve-casing of the initial or foot control. As seen in Fig. 1, thiscontrol is placed in such position relatively to the machine that it maybe operated by the foot conveniently. In this casing 22 is a rockingvalve 23, which is rocked by a shaft 24 grooved into it, as shown inFig. 7. This shaft 24 extends outwardly through the casing 22 and ismounted in Walls 25 of the baseplate 26, which carries the casing. Fixedto 2511s the pedal-casting 27, the upper surface of which is formed withor has secured to it a foot-rest 28, so disposed, as seen in Fig. 5, asto enable the operator by pressure of the toe or heel to rock the shaft24 in either direction. The pedal-casting 27 has a foot-stem 29, whichfits and is packed in a seat 30 in the base-plate 26. With this seat,under the packed stem 29, a passage 31 communicates, said passagecommunicating at its other end with a port 32, open at its upper end toa groove 33l in the valve 23, so that the pressure in the valve-casing22 is admitted under the pedal-casting to hold it steady in a neutral ormiddle position against any unintentional pressure while the foot isresting on the pedal or against accidental displacement of any kind. Thevalve 23 is provided with a central groove 34, which, as seen/ in Fig.7, is o enwhen the valve is in neutral position to t e side ports 35 and36 in the casing 22 and also is open to the intervening relief-port 37.

The port 36 of the initial casing 22 is connected, as shown in Fig. 1,by a pipe 38 with the valve-chamber 10 of the horizontallydisposedengine 4. The port 35 of said initial casing is connected by a pipe 39with the upper end of the control-chamber 14 of the vertically-disposedengine 6, said pipe opening into. said chamber, as shown in Fig. 2,above or back of the piston 18.

1nthe initial casing 22 is a top passage 40,

42, (shown in Fig. 1,) the near branch of which may be regarded as theinlet to the system for the fluid under compression and with the otherbranch of which is connected a pipe 41, which leads up to and opens intol the side of the control-chamber 14 of the verp tically-disposed engine6, as is seen clearly in Fig. 3.

The operation is as follows: The position of the initial foot-controlledvalve 23 shown in Fig. 7 is the neutral one, in which both engines areat rest. It will be seen that the port 36 is closed by the valve to thepressurespace in the casing above said valve, and therefore there is nopressure in pipe 38, leading to the horizontally-disposed engine 4, andsaid engine is inoperative. It will also be seen that saidpressure-space n casing 22 is open through pipe 41 to thecontrol-chamber 14 of the vertically-disposed engine 6, and thereforethe pressure is upon the front of the piston 18 in said chamber. theport 35 of the initial casing is closed by the va ve 23 to the pressurethere is no pressure in the pipe 39 to the back of said piston, and itfollows that the pressure from pipe 41 in front of said piston will haveforced said piston over or up to its limit, as seen in Fig. 2, therebycausing the controlvalve 15 to cover the passage 16' to the valvechamber10 of the engine, so that no pressure is admitted to said chamber tooperate the engine. Moreover, in this position of the control-valve 15the contact-arm 19 of its stem 17 bears, as seen in Fig. 2, on theholding-pin 20, which in turn bears onv the slid-evalve 11 and holds itinoperatye over to: one limit, thereby exposing one of the engineports.A small amount of the press-ure fluid passes through 'the small port 15in the control-valve 15 and through the slide-valve chamber and entersthe engine-cylinder throughl its exposed' port, thereby holding itspiston up with its hammer retracted. Any resistant pressure in eitherengine is relieved in the position shown in Fig. 7 through the ports 36and 35, the groove 34, and the relief-port 37. When the horizontalengine 4 is to be operated, pressure is exerted upon the toe of thepedal-casting 27, whereby the valve 23 is so rocked as to open the port36 to the pressure-space, whereupon the fluid passes through the pipe 38to operate the horizontal engine in the ordinary manner. 1n thismovement it will be observed that the connections to the vertical engineare not affected, and said engine remains inactive. To operate thevertical engine, pressure is placed on the heel of the foot-casting insuch manner as to rock valve 23 to close port 36 and to open port 35 tothe pressure-space. rlhe pressure now passes through the pipe 39 to thetop or end of the control-chamber 14, back or on top of the piston 18The pressure area back of this piston being greater than the pressurearea in front of it, the valve 15 is thereby moved over to uncover thepassage 16 to the slide-valve chamber and to cause the arm 19 to releaseits pres- Now as IOO IIO

sure on the sliding holding-pin 20. In this position the valve 15 isheld, and the pressure is admitted to the engine-valve l1, which is nowfree to operate. When the operator releases the pressure of his foot,the fluid-pressure Jfrom above the valve 23 passes through the groove33, port 32, and passage 31 to the packed stem 29 of the pedal-castingand holds said casting steady in its neutral position.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. In a machine having a plurality of independent fluid-engines, thecombination of a lever, an initial valve operated by the lever forcontrolling fluid-pressure, and means operated by said pressure forseparately controlling said fluid-engines.

2. In a machine having a plurality of independent fluid-engines, thecombination of a lever, a valve operated by the lever for controllingfluid-pressure, and means operated by said pressure for separatelycontrolling said fluid-engines, said means including a Huid-controlledvalve for admitting and cutting orf the pressure to the enginevalvechamber.

3. In a machine having a plurality of independent fluid-engines, thecombination of a lever, a valve operated by the lever for controllingluid-pressure, and means operated by said pressure for separatelycontrolling said fluid-engines, said means including a fluid-controlledvalve for admitting and cutting orf the pressure to the engine-valvechamber, and con-tact devices between said control-valve and theengine-valve to arrest and to release said engine-valve.

4. In a machine having a plurality of independent rluid-engines, thecombination of a lever, a valve operated by the lever Jfor controllingfluid-pressure, and means operated by said pressure for separatelycontrolling said fluid-engines, said means including a {luid-controlledvalve for admitting and cutting off the pressure to the engine-valvechamber, said control-valve having a small port through it to admitpressure to one end of the engine-cylinder to hold its piston retractedwhen the engine is at rest, and contact devices between saidcontrol-valve and the engine-valve to arrest and to release saidengine-valve.

5. The combination with a plurality of independent hammer-drivingfluid-engines, of fluid-operated means, including an initialpressure-controlling valve, for separately controlling each engine, anda lever for operating said initial valve.

6. In a machine having a plurality of independent luid-engines, afluid-operated means for separately controlling each engine, said meansinvolving a duid-control valve which admits and cuts off the pressure toand from the engine-valve, and contact devices between saidcontrol-valve and the enginevalve for throwing the latter into and outof operation.

7. In a machine having a plurality of independent fluid-engines, afluid-operated means for separately controlling each engine, said meansinvolving a {luid-control valve which admits and cuts off the pressureto and Jfrom the engine-valve, and contact devices between saidcontrol-valve and the enginevalve for throwing the latter into and outof operation, said contact devices consisting of a projecting stem ofthe control-valve, a contact-arm of said stem, and a slidable holdingpinimpinging against said arm and enginevalve.

8. In a machine having plural independent fluid-engines, one enginebeing set vertically and the other horizontally, the combination of acontrol-chamber for the vertically-disposed engine communicating withthe valvechamber thereof, a valve in said controlchamber controllingsaid communication, contact devices by which said control-valve throwsthe engine-valve into and out of action, a rocking lever, andfluid-operated means operated by the lever to actuate the control-valveof the vertical engine and to independently operate the horizontalengine.

9. In a machine having plural independent huid-engines, one engine beingset vertically and the other horizontally, the combination of acontrol-chamber for the vertical engine communicating with thevalve-chamber thereof, a valve in said chamber controlling saidcommunication, contact devices by which said control-valve throws theenginevalve into and out of operation, a rocking lever andfluid-operated means operated by the lever to actuate the control-valveof the vertical engine and to independently operate the horizontalengine, said means comprising Huid-passages to the engines, and aninitial pressure-controlling valve operated by the lever and controllingsaid passages.

l0. In a machine having pluralindependent fluid-engines, one enginebeing vertically and the other horizontally disposed, the combination ofa fluid-control chamber for the vertical engine communicating with thevalvechamber thereof, a valve in the said controlchamber controllingsaid communication, means by which the movement of said valve throwsinto and out of action the enginevalve, an initial casing withfluid-passages therefrom to each engine to separately operate them, avalve in said initial casing controlling said passages, and a lever loroperating said valve.

11. In a machine having a plurality of independent iluid engines, :duidoperated means for separately controlling each engine,

IOO

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said means including an initial valve-easing, l vIn testimony whereof Ihave signed my passages therefrom to the engines, a valve in name tothis specificationin the presence of said easing controlling saidpassages, a roek- A two subscribing Witnesses.

ing lever for operating said valve, and fluid Z WILLIAM W, WORD.communications Afrom said initial easing eon- Witnesses:

trolled by said valve, for holding said lever in i CHARLES H. TAYLoR,

neutral position. f EDITH M. ROBINSON.

